<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

 <head>

  <title>CSS Test: margin collapsing - resolving vertical padding percentage</title>

  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
  <link rel="help" href="http://www.w3.org/TR/CSS21/box.html#collapsing-margins" />
  <meta name="flags" content="" />
  <meta content="Adjoining of vertical (top and bottom) margins must be determined only after resolving percentage padding-top and padding-bottom values." name="assert" />

  <style type="text/css"><![CDATA[
  div#grand-parent-block-container
  {
  background-color: red;
  border: black solid 3px;
  /* Such border prevents margin collapsing with the body vertical margins */
  }

  div#parent-block-container
  {
  background-color: green;
  color: white;
  padding: 2%;
  }

  div#child-block {margin: 100px 0px;}

  /*
  In this testcase, div#child-block's vertical (top and bottom)
  margins should collapse with div#parent-block-container's vertical
  (top and bottom) margins because div#child-block has no used
  padding-top and no used padding-bottom. On the other hand,
  div#parent-block-container's vertical (top and bottom) margins
  should NOT collapse with div#grand-parent-block-container's vertical
  (top and bottom) margins because div#parent-block-container, after
  resolving percentage values, has an used padding-top value and an used
  padding-bottom value.
  */
  ]]></style>

 </head>

 <body>

  <div id="grand-parent-block-container">
   <div id="parent-block-container">
    <div id="child-block">
     Test passes if there is <strong>no red</strong>.
    </div>
   </div>
  </div>

 </body>
</html>
